Circuit/System Testing

Note: Inspect for brake lamp related DTCs and symptoms before diagnosing DTC C0136.

Note: A binding brake pedal or misadjusted brake switch can cause DTC C0136 to set. Correct any hydraulic brake symptoms before diagnosing this DTC. Refer to Symptoms - Hydraulic Brakes .

Disconnect the EBCM harness connector. Connect a test lamp between the stop lamp switch signal circuit and ground. Apply the brake.

• If the test lamp does not illuminate but the center high mounted stop lamp (CHMSL) does illuminate, repair open in the stop lamp switch signal circuit.
• If the test lamp and CHMSL does not illuminate, go to Symptoms - Lighting Systems .
• If the test lamp and CHMSL illuminates, replace the EBCM/brake pressure modulator valve (BPMV).